JPS6189146A - Preparation of bumper for car - Google Patents
Preparation of bumper for carInfo
- Publication number
- JPS6189146A JPS6189146A JP59208960A JP20896084A JPS6189146A JP S6189146 A JPS6189146 A JP S6189146A JP 59208960 A JP59208960 A JP 59208960A JP 20896084 A JP20896084 A JP 20896084A JP S6189146 A JPS6189146 A JP S6189146A
- Authority
- JP
- Japan
- Prior art keywords
- bumper cover
- inner panel
- bumper
- plasma
- plasma treatment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000005187 foaming Methods 0.000 claims abstract description 12
- 239000004814 polyurethane Substances 0.000 claims abstract description 11
- 229920002635 polyurethane Polymers 0.000 claims abstract description 11
- 238000009832 plasma treatment Methods 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims abstract description 8
- 229920005672 polyolefin resin Polymers 0.000 claims description 11
- 239000011550 stock solution Substances 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 230000003014 reinforcing effect Effects 0.000 claims description 2
- 239000007788 liquid Substances 0.000 abstract description 4
- 229920005989 resin Polymers 0.000 abstract description 4
- 239000011347 resin Substances 0.000 abstract description 4
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 abstract description 3
- 230000000703 anti-shock Effects 0.000 abstract 1
- -1 polybutylene terephthalate Polymers 0.000 description 20
- 239000012948 isocyanate Substances 0.000 description 10
- 239000000463 material Substances 0.000 description 10
- 239000004743 Polypropylene Substances 0.000 description 8
- 229920005830 Polyurethane Foam Polymers 0.000 description 8
- 229920001155 polypropylene Polymers 0.000 description 8
- 239000011496 polyurethane foam Substances 0.000 description 8
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 6
- 229920005862 polyol Polymers 0.000 description 5
- 150000003077 polyols Chemical class 0.000 description 5
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 description 3
- 239000004721 Polyphenylene oxide Substances 0.000 description 3
- 239000006096 absorbing agent Substances 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 229920000570 polyether Polymers 0.000 description 3
- 230000035939 shock Effects 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- YJWBWQWUHVXPNC-AWEZNQCLSA-N Dicentrine Chemical compound CN([C@H]1CC=2C=C(C(=CC=2C2=C11)OC)OC)CCC1=CC1=C2OCO1 YJWBWQWUHVXPNC-AWEZNQCLSA-N 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 2
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 150000002513 isocyanates Chemical class 0.000 description 2
- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 229920005906 polyester polyol Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 229920000909 polytetrahydrofuran Polymers 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- FKTHNVSLHLHISI-UHFFFAOYSA-N 1,2-bis(isocyanatomethyl)benzene Chemical compound O=C=NCC1=CC=CC=C1CN=C=O FKTHNVSLHLHISI-UHFFFAOYSA-N 0.000 description 1
- ZXHZWRZAWJVPIC-UHFFFAOYSA-N 1,2-diisocyanatonaphthalene Chemical compound C1=CC=CC2=C(N=C=O)C(N=C=O)=CC=C21 ZXHZWRZAWJVPIC-UHFFFAOYSA-N 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 1
- ZNWJKOJJZQDPSW-UHFFFAOYSA-N Eximin Natural products O1C(OC=2C=CC(O)=CC=2)C(O)C(O)C(O)C1COC(=O)C1=CC=CC=C1 ZNWJKOJJZQDPSW-UHFFFAOYSA-N 0.000 description 1
- 239000005057 Hexamethylene diisocyanate Substances 0.000 description 1
- 235000000177 Indigofera tinctoria Nutrition 0.000 description 1
- YJWBWQWUHVXPNC-UHFFFAOYSA-N O-methyl-phanostenine Natural products C12=C3C=4C=C(OC)C(OC)=CC=4CC2N(C)CCC1=CC1=C3OCO1 YJWBWQWUHVXPNC-UHFFFAOYSA-N 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 235000011037 adipic acid Nutrition 0.000 description 1
- 239000001361 adipic acid Substances 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000005495 cold plasma Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 150000004985 diamines Chemical class 0.000 description 1
- CZZYITDELCSZES-UHFFFAOYSA-N diphenylmethane Chemical compound C=1C=CC=CC=1CC1=CC=CC=C1 CZZYITDELCSZES-UHFFFAOYSA-N 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 description 1
- 239000011796 hollow space material Substances 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 238000009863 impact test Methods 0.000 description 1
- 229940097275 indigo Drugs 0.000 description 1
- COHYTHOBJLSHDF-UHFFFAOYSA-N indigo powder Natural products N1C2=CC=CC=C2C(=O)C1=C1C(=O)C2=CC=CC=C2N1 COHYTHOBJLSHDF-UHFFFAOYSA-N 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 150000003951 lactams Chemical class 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- SLCVBVWXLSEKPL-UHFFFAOYSA-N neopentyl glycol Chemical compound OCC(C)(C)CO SLCVBVWXLSEKPL-UHFFFAOYSA-N 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 150000002923 oximes Chemical class 0.000 description 1
- 229920001707 polybutylene terephthalate Polymers 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920001451 polypropylene glycol Polymers 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000013020 steam cleaning Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Laminated Bodies (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は自動車用バンパー、とくにバンパーカバーが樹
脂製である弾性バンパーに関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to an automobile bumper, and particularly to an elastic bumper whose bumper cover is made of resin.
［従来の技術］
従来耐衝撃性の良好な弾性バンパーをうるには、樹脂製
バンパーカバーとインナーパネルもしくはりインフォー
スメントとの間の中空部、すなわちボックス部に予め製
造された衝撃吸収体、たとえばポリウレタン発泡体やハ
ニカム構造体を挿入する方式が一般的に採用されている
が、このばあい衝撃吸収体は単に挿入されるだけで、バ
ンパーカバーに接看、溶着などの手段によって結合され
ていない。またこのばあい耐衝撃性能などの性能面から
バンパーカバーの素材としてはリアクションインジエク
シミンモールディング（ＲＩ旧ポリウレタンやポリブチ
レンテレフタレート変性ポリカーボネートなと高価なも
のが用いられている。[Prior Art] Conventionally, in order to obtain an elastic bumper with good impact resistance, a shock absorber is manufactured in advance in the hollow part between the resin bumper cover and the inner panel or reinforcement, that is, in the box part. For example, a method of inserting polyurethane foam or a honeycomb structure is generally adopted, but in this case, the shock absorber is simply inserted and is not bonded to the bumper cover by contact, welding, or other means. do not have. Also, in this case, expensive materials such as Reaction Indigo Eximine Molding (formerly RI polyurethane and polybutylene terephthalate modified polycarbonate) are used as materials for the bumper cover due to its impact resistance and other performance aspects.
［発明が解決しようとする問題点］
本発明は、バンパーカバーの素材として安価なオレフィ
ン系樹脂、たとえば変性ボリブロピレンを用い、さらに
衝撃性能を向上させるためにバンパーカバーと衝撃吸収
体とを一体化し、総合的に安価でかつ性能のすぐれたバ
ンパーを提供せんとするものである。[Problems to be Solved by the Invention] The present invention uses an inexpensive olefin resin, such as modified polypropylene, as a material for the bumper cover, and further integrates the bumper cover and a shock absorber in order to improve impact performance. The objective is to provide a bumper that is comprehensively inexpensive and has excellent performance.
［問題点を解決するための手段］
本発明は、オレフィン系樹脂からなるバンパーカバーの
裏面をプラズマ処理し、該バンパーカバーとインナーパ
ネルとの間にポリウレタン発泡原液を注入し、発泡させ
ることを特徴とする自動車用バンパーの製造法に関する
。[Means for Solving the Problems] The present invention is characterized in that the back surface of a bumper cover made of olefin resin is subjected to plasma treatment, and a polyurethane foaming stock solution is injected between the bumper cover and the inner panel to cause foaming. This invention relates to a manufacturing method for automobile bumpers.
［作 用］
変性ポリプロピレンなどのオレフィン系樹脂とポリウレ
タンとは一般に！着性がわるいが、オレフィン系樹脂か
らなるバンパーカバーの裏面をプラズマ処理することに
より、注入発泡成形されたポリウレタン発泡体との密着
性がよくなり、両者が完全に一体化されるから、外力は
常にバンパーカバーとポリウレタン発泡体との一体化物
全体で吸収されることになり、その結果安価であるがそ
れ自体耐衝撃性能の劣るオレフィン系樹脂を大きな耐衝
撃性が要求されるバンパーのバンパーカバー素材として
用いることが可能となった。[Function] What is the difference between olefin resins such as modified polypropylene and polyurethane? Although the adhesion is poor, plasma treatment of the back side of the bumper cover made of olefin resin improves the adhesion with the injection molded polyurethane foam, and the two are completely integrated, so external forces can be reduced. The material is always absorbed by the entire combination of the bumper cover and polyurethane foam, and as a result, the olefin resin, which is inexpensive but has poor impact resistance itself, is used as a bumper cover material for bumpers that require high impact resistance. It became possible to use it as
［実施態様］ つぎに図面にもとづいて本発明の詳細な説明する。[Embodiment] Next, the present invention will be explained in detail based on the drawings.
第１〜２図は本発明の方法の一実施例を工程順に示す断
面図である。1 and 2 are cross-sectional views showing an embodiment of the method of the present invention in the order of steps.
オレフィン系樹脂からバンパーカバー（１）を成形し、
該バンパーカバー（１）の少なくとも裏面にプラズマ処
理を施Ｑ１これを第１図に示されるごとくインナーパネ
ル（２に組付ける。A bumper cover (1) is molded from olefin resin,
At least the back surface of the bumper cover (1) is subjected to plasma treatment (Q1) and then assembled to the inner panel (2) as shown in FIG.
ついでバンパーカバー（１）とインナーパネル（２）と
の間の中空部にポリウレタン発泡原液を注入し、発泡さ
せてポリウレタン発泡体（３）を形成すると第２図に示
されるバンパーがえられる。このばあいバンパーカバー
（１）の裏面がプラズマ処理されていることによりポリ
ウレタン発泡体（３）との密着性がよく、完全に一体化
される。Next, a polyurethane foaming solution is injected into the hollow space between the bumper cover (1) and the inner panel (2) and foamed to form a polyurethane foam (3), resulting in the bumper shown in FIG. 2. In this case, since the back surface of the bumper cover (1) is plasma treated, it has good adhesion with the polyurethane foam (3) and is completely integrated.
本発明においては、バンパーカバー（１）とインナーパ
ネル（２）とを成形型としてポリウレタンの発泡成形を
行なうので、高グレード、低グレードのバンパーともに
同じバンパーカバーが使用でき、素材の違いからくる収
縮率別に金型を作成する必要がなく、コストの低下が図
られる。In the present invention, since the bumper cover (1) and the inner panel (2) are foam-molded using polyurethane as a mold, the same bumper cover can be used for both high-grade and low-grade bumpers, and shrinkage caused by differences in materials can be avoided. There is no need to create molds for each rate, reducing costs.
バンパーカバー（１）の素材としてのオレフィン系樹脂
としてはポリプロピレン、プロピレンとエチレンとめ共
重合体、ポリプロピレンと他の樹脂とのブレンドなどの
オレフィン系樹脂を主体とするものが用いられる。とく
に変性ポリプロピレンが好ましく用いられる。かかる変
性ポリプロピレンとしては、たとえばポリプロピレン５
０〜９０重量％、エチレン−プロピレン共重合体５〜４
０重量％およびポリエチレン０〜３０重量％からなる組
成のものがあげられる。As the olefin resin used as the material for the bumper cover (1), those mainly composed of olefin resins such as polypropylene, propylene and ethylene stopper copolymers, and blends of polypropylene and other resins are used. In particular, modified polypropylene is preferably used. Examples of such modified polypropylene include polypropylene 5
0-90% by weight, ethylene-propylene copolymer 5-4
Examples include compositions consisting of 0% by weight and 0 to 30% by weight of polyethylene.
プラズマ処理は高真空下で酸素、チッ素、アルゴン、ヘ
リウムなどのガスにマイクロ波を作用させてえられるプ
ラズマ（コールドプラズマ）をバンパーカバー（１）の
裏面に照射することにより行なわれる。The plasma treatment is performed by irradiating the back surface of the bumper cover (1) with plasma (cold plasma) obtained by applying microwaves to a gas such as oxygen, nitrogen, argon, or helium under a high vacuum.
バンパーカバー（１）の裏面をプラズマ処理する際にそ
の外面もプラズマ処理することが可能であり、そうする
と外面に塗装を施すのが容易となる。When plasma-treating the back surface of the bumper cover (1), it is possible to plasma-treat the outer surface as well, making it easier to apply paint to the outer surface.
インナーパネル（２）の素材としては金属、強化合成樹
脂、非強化合成樹脂のいずれも使用できる。インナーパ
ネル（２）の素材としてバンパーカバー（１）と同様に
オレフィン系樹脂を用い、その前面をプラズマ処理する
ときは、インナーパネル（ａとポリ・フレタン発泡体（
３）との密着性が良好となる。As the material for the inner panel (2), any of metal, reinforced synthetic resin, and non-reinforced synthetic resin can be used. Olefin resin is used as the material for the inner panel (2) like the bumper cover (1), and when the front surface is plasma treated, the inner panel (a) and polyurethane foam (
3) Good adhesion with the material.
ポリウレタン発泡原液としては通常のものが用いられ、
バンパーのグレードに応じて適宜のものが選択使用され
る。The usual polyurethane foaming stock solution is used.
An appropriate one is selected and used depending on the grade of the bumper.
たとえば、イソシアネート化合物としてはつぎのものが
あげられる。For example, the isocyanate compounds include the following.
（１）単量体イソシアネート
トリレンジイソシアネート（ＴＤＩ） 、ジフェニルメ
タンジイソシアネート（ピュアーＨＯＴ）、ポリメリッ
ク）＋０１ 、ナフタレンジイソシアネ−ト（ＭＤＩ）
などの芳香族イソシアネート、ヘキサメチレンジイソシ
アネート（ＭＤＩ） 、キシリレンジイソシアネート（
ＸＤＩ）などの脂肪族イソシアネートなどがある。(1) Monomeric isocyanates tolylene diisocyanate (TDI), diphenylmethane diisocyanate (Pure HOT), polymeric) +01, naphthalene diisocyanate (MDI)
Aromatic isocyanates such as hexamethylene diisocyanate (MDI), xylylene diisocyanate (
Examples include aliphatic isocyanates such as XDI).
（２）変性イソシアネ“−ト
前記イソシアネート化合物のアダクト体、ウレタン変性
体、ビユレット変性体などがある。(2) Modified Isocyanate Examples include adducts, urethane-modified products, billet-modified products, etc. of the above-mentioned isocyanate compounds.
（３）ウレタンプレポリマー
前記イソシアネート化合物とポリオールとからなるプレ
ポリマーなどがある。(3) Urethane prepolymer There are prepolymers made of the above-mentioned isocyanate compound and polyol.
（４）その他
前記イソシアネート化合物をフェノール、オキシム、ラ
クタムなどでブロックしたものなどがある。(4) Others include those obtained by blocking the above-mentioned isocyanate compounds with phenol, oxime, lactam, etc.
前記各種イソシアネート化合物は単独、または混合して
用いられる。The various isocyanate compounds mentioned above may be used alone or in combination.
ポリオール成分としてはつぎのちのがあげられる。Examples of polyol components include the following.
（１）ポリエーテルポリオール
ポリオキシアルキレンポリオール（ＰＰＧポリエーテル
）、ポリテトラメチレンエーテルグリコール（ＰＴＨＥ
Ｇ）などが好ましく用いられる。(1) Polyether polyol polyoxyalkylene polyol (PPG polyether), polytetramethylene ether glycol (PTHE)
G) etc. are preferably used.
（２）ポリエステルポリオール
アジピン酸、テレフタル酸、イソフタル酸などの酸成分
とエチレングリコール、ネオペンチルグリコールなどの
多価アルコール成分との縮合系ポリエステルポリオール
が好ましく用いられる。(2) Polyester polyol A polyester polyol condensed with an acid component such as adipic acid, terephthalic acid, or isophthalic acid and a polyhydric alcohol component such as ethylene glycol or neopentyl glycol is preferably used.
ポリウレタン発泡原液の成分はえられる発泡体が軟質か
ら半硬質となる範囲でバンパーの要求性能を考慮して適
宜選択すればよい。The components of the polyurethane foaming stock solution may be appropriately selected in consideration of the required performance of the bumper within a range where the obtained foam is from soft to semi-hard.
本発明においては第３図に示されるごとく、バンパーカ
バー（１）の裏面にリブ（４）を一体的に設けることも
可能である。またインナーパネル（２の前面にもリブ（
５）を一体的に設けてもよい。これらリブ（４）、（５
）は共に設けてもよい。このばあいリブ（４）、（５）
は水平方向、垂直方向に適宜の間隔をおいて複数個設け
られる。In the present invention, as shown in FIG. 3, it is also possible to integrally provide a rib (4) on the back surface of the bumper cover (1). There are also ribs on the front of the inner panel (2).
5) may be provided integrally. These ribs (4), (5
) may be provided together. In this case ribs (4), (5)
A plurality of are provided at appropriate intervals in the horizontal and vertical directions.
さらに本発明においては、第４図に示されるごとく、必
要に応じてバンパーカバー（１）とインナーパネル（２
）との間に補強構造物（６）を配設してもよい。Furthermore, in the present invention, as shown in FIG. 4, the bumper cover (1) and the inner panel (2)
) may be provided with a reinforcing structure (6).
［実施例］
つぎに実施例および比較例をあげて本発明の詳細な説明
する。[Examples] Next, the present invention will be explained in detail by giving Examples and Comparative Examples.
実施例１
変性ポリプロピレン（三井石油化学工業■製Ｘ ６４０
）を用いて第１図に示されるごとき形状のバンパーカバ
ー（平均厚さ３．０ｍｍ＞およびインナーパネル（平均
厚さ３．０ｍｍ ）を射出成形しｌこ 。Example 1 Modified polypropylene (X 640 manufactured by Mitsui Petrochemical Industries)
) to injection mold a bumper cover (average thickness: 3.0 mm) and an inner panel (average thickness: 3.0 mm) as shown in FIG.
えられたバンパーカバーおよびインナーパネルを１．１
．１−トリクロロエタンを用い、９０℃で６０秒間蒸気
洗浄した。1.1 The obtained bumper cover and inner panel
．． Steam cleaning was performed using 1-trichloroethane at 90° C. for 60 seconds.
ついでバンパーカバーの裏面およびインナーパネルの前
面を酸素プラズマによるプラズマ処理に付した。プラズ
マ処理は真空度０．４トール、マイクロ波（２４５０に
Ｈｚ）出力６００−１０２ガス流量２０ｆＪ／分、処理
時間６０秒の条件で行なった。Next, the back surface of the bumper cover and the front surface of the inner panel were subjected to plasma treatment using oxygen plasma. The plasma treatment was carried out under the following conditions: degree of vacuum 0.4 Torr, microwave (2450 Hz) output 600-102 gas flow rate 20 fJ/min, and treatment time 60 seconds.
プラズマ処理したバンパーカバーとインナーパネルを第
１図のように組付け、下記の処方のポリウレタン発泡原
液を注入し発泡させた。えられたポリウレタン発泡体の
見かけ密度は０．１００ｇ／ＣＩＲ’であり、水平方向
の最大厚さは７０−であった。The plasma-treated bumper cover and inner panel were assembled as shown in Figure 1, and a polyurethane foaming solution with the following formulation was injected and foamed. The apparent density of the resulting polyurethane foam was 0.100 g/CIR' and the maximum horizontal thickness was 70-.
ポリウレタン発泡原液
成分 重量部（Ａ液）
エチレンオキサイド・プロピレン
オキサイ′ド付加物ポリエーテル
ポリオール（水酸基価３５） １００エチレ
ングリコール １０ポリエチレンジアミ
ン ０．２７レオンガス
５（Ｂ液）
ジフェニルメタンジイソシ
アネート変性プレポリマー
（イソシアネート当ｆｆ１１８０） （インデック
ス１００相当）
えられたバンパーについてつぎの耐衝撃性試験を行なっ
た。結果を第１表に示す。Polyurethane foaming stock solution components Parts by weight (Liquid A) Ethylene oxide/propylene oxide adduct polyether polyol (hydroxyl value 35) 100 Ethylene glycol 10 Polyethylene diamine 0.27 Leon gas
5 (Liquid B) Diphenylmethane diisocyanate-modified prepolymer (ff1180 per isocyanate) (equivalent to index 100) The following impact resistance test was conducted on the obtained bumper. The results are shown in Table 1.
［耐衝撃性試験］
第５図に示すように、重１８０ＯＮ９の車体（１０）に
実車状態にバンパー（１１）を取り付け、ペンデュラム
（１２）を８ｂ／ｈの速度で衝突させる５マイルペンデ
ユラム衝撃試験を行なった。[Impact Resistance Test] As shown in Figure 5, a bumper (11) is attached to a vehicle body (10) weighing 180ON9 in actual vehicle condition, and a pendulum (12) is collided with it at a speed of 8 b/h to perform a 5-mile pendulum test. An impact test was conducted.
比較例
実施例１において、バンパーカバーおよびインナーパネ
ルにプラズマ処理を施さなかったほかは実施例１と同様
にしてバンパーを作製し、それについて耐衝撃性試験を
行なった。結果を第１表に示す。Comparative Example A bumper was produced in the same manner as in Example 1 except that the bumper cover and inner panel were not subjected to plasma treatment, and an impact resistance test was conducted on it. The results are shown in Table 1.
実施例２
実施例１における変性ポリプロピレンにかえて三菱油化
ｎ ＩＦＪ ＢＣ−８を用いたほかは実施例１と同様に
してバンパーを作製し、それについて耐衝撃性試験を行
なった。結果を第１表に示す。Example 2 A bumper was produced in the same manner as in Example 1, except that Mitsubishi Yuka IFJ BC-8 was used in place of the modified polypropylene in Example 1, and an impact resistance test was conducted on it. The results are shown in Table 1.
第 １ 表
実施例３
実施例１において、バンパーカバーの外面をもプラズマ
処理したほかは実施例１と同様にしてバンパーを作製し
た。Table 1 Example 3 A bumper was produced in the same manner as in Example 1 except that the outer surface of the bumper cover was also plasma-treated.
ついでバンパーカバーの外面にフレキセン＃１０１（日
本ビーケミカル（！１製ウレタン系塗料）を塗布し、１
２５℃×３０分の条件で焼付けて厚さ４０μｍの上塗り
塗膜を形成した。Next, apply Flexene #101 (urethane paint made by Nippon B Chemical (!1)) to the outer surface of the bumper cover, and
It was baked at 25° C. for 30 minutes to form a top coat film with a thickness of 40 μm.
えられた塗膜の密着性をゴバン目剥離試験（ＪＩＳに５
４００）によって調べたところ、その結果はＯ／１００
であった。The adhesion of the resulting coating film was evaluated using a cross-cut peeling test (JIS 5).
400), the result was O/100.
Met.
第１〜２図は本発明の方法の一実施例を工程順に示す断
面図、第３〜４図はそれぞれ他の実施例を示す断面図、
第５図は耐衝撃性試験の方法を示ず概略説明図である。
（図面の主要符号）
（１）：バンパーカバー
（２）：インナーパネル
（３）：ポリウレタン発泡体1-2 are cross-sectional views showing one embodiment of the method of the present invention in the order of steps, and FIGS. 3-4 are cross-sectional views showing other embodiments, respectively.
FIG. 5 is a schematic explanatory diagram without showing the method of the impact resistance test. (Main symbols in the drawing) (1): Bumper cover (2): Inner panel (3): Polyurethane foam
Claims (1)
プラズマ処理し、該バンパーカバーとインナーパネルと
の間にポリウレタン発泡原液を注入し、発泡させること
を特徴とする自動車用バンパーの製造法。 ２ インナーパネルがオレフィン系樹脂からなり、かつ
その前面をプラズマ処理してなる特許請求の範囲第１項
記載の方法。 ３ バンパーカバーとインナーパネルとの間に補強構造
物を配設してなる特許請求の範囲第１項記載の方法。[Claims] 1. Manufacture of an automobile bumper characterized by subjecting the back side of a bumper cover made of olefin resin to plasma treatment, and injecting a polyurethane foaming stock solution between the bumper cover and an inner panel to cause foaming. Law. 2. The method according to claim 1, wherein the inner panel is made of olefin resin and the front surface thereof is plasma-treated. 3. The method according to claim 1, wherein a reinforcing structure is provided between the bumper cover and the inner panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59208960A JPS6189146A (en) | 1984-10-04 | 1984-10-04 | Preparation of bumper for car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59208960A JPS6189146A (en) | 1984-10-04 | 1984-10-04 | Preparation of bumper for car |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6189146A true JPS6189146A (en) | 1986-05-07 |
| JPH0414610B2 JPH0414610B2 (en) | 1992-03-13 |
Family
ID=16564998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59208960A Granted JPS6189146A (en) | 1984-10-04 | 1984-10-04 | Preparation of bumper for car |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6189146A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63114859U (en) * | 1987-01-21 | 1988-07-23 | ||
| US5545022A (en) * | 1994-02-10 | 1996-08-13 | Shape Corporation | Apparatus for manufacturing a vehicle bumper |
| WO2003037625A1 (en) * | 2001-10-29 | 2003-05-08 | Bridgestone Corporation | Shock absorbing material |
| US6793256B2 (en) * | 2001-12-17 | 2004-09-21 | Jsp Licenses, Inc. | Vehicle bumper energy absorber system and method |
| WO2006042818A1 (en) * | 2004-10-20 | 2006-04-27 | Krauss-Maffei Kunststofftechnik Gmbh | Method for producing multicomponent plastic molded items |
-
1984
- 1984-10-04 JP JP59208960A patent/JPS6189146A/en active Granted
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63114859U (en) * | 1987-01-21 | 1988-07-23 | ||
| US5545022A (en) * | 1994-02-10 | 1996-08-13 | Shape Corporation | Apparatus for manufacturing a vehicle bumper |
| US5545361A (en) * | 1994-02-10 | 1996-08-13 | Shape Corporation | Method of making a vehicle bumper with foam therein using a deformable plug |
| WO2003037625A1 (en) * | 2001-10-29 | 2003-05-08 | Bridgestone Corporation | Shock absorbing material |
| US6793256B2 (en) * | 2001-12-17 | 2004-09-21 | Jsp Licenses, Inc. | Vehicle bumper energy absorber system and method |
| WO2006042818A1 (en) * | 2004-10-20 | 2006-04-27 | Krauss-Maffei Kunststofftechnik Gmbh | Method for producing multicomponent plastic molded items |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0414610B2 (en) | 1992-03-13 |
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